So you don't wonder why DN4GR?!
Perhaps you have been reading too much into the yards of absolute cr@p that gets posted on PPRuNe slagging off SIA?
If you want a direcy entry command onto either a B747-400 or B777 anywhere then there will be a price to pay, in this case you have to buckle under and do it the SQ way.
If you don't want to pay the price then you join a very large major carrier as a second officer, put in about eighteen years and Hey Presto! you are a B744 or B777 captain.
Nothing in this life comes for free DN4GR!
Best of luck, and if you fancy it have a go.